Shacking
vi. 未婚而同居（shack的現在分詞形式）
??? 情景例句
Don't get so excited about it.
別因為這事兒太激動。
I heard such a funny story this morning.
今天早上我聽到一件十分有趣的事。
Oh, it's a short ruler. Who has a long one?
噢，這是把短尺。誰有長尺？